The aim of BurVal has been to deliver knowledge and understanding of the structural and hydrological properties of deeper groundwater resources found in buried valleys. This led to the development of spatial planning strategies that take these ancient groundwater reservoirs into account and ensure a sustainable fresh water resource management. Achievements: As a main outcome, 6 pilot projects have been carried out in the participating areas where groundwater quality and quantity were evaluated. The results have been used as input for the development of geophysical methods and a model for exploration and examination of groundwater resources. These methods have provided useful insights, once evaluating different spatial development scenarios.The implementation sites in Hamburg and Schleswig-Holstein, where two waterworks started in 2007 in order to use the geological 3D model to produce a groundwater flow model to optimise the water extraction from the catchments areas will need some time to take effect.On the basis of the improved understanding gained through the project, action plans and recommendations have been developed. The results are summarised in the book "Groundwater Resources in Buried Valleys - a Challenge for Geosciences". It includes a 'technical part' as well as a 'planning part'. The book addresses experts on the one hand and decision makers, spatial planners, waterworks and public authorities on the other.The conducted geophysical and geological mapping, which was performed in the project, will be used in the delineation of groundwater bodies as requested by the Water Framework Directive and in evaluation of the 3D structure of the subsurface, which is important for the spatial planning in the investigated regions and evaluation of the compliance with the EU directives.